Originally Posted by
CPH-Flyer
There is no discounted cash upgrade to business class.
You can reprice the flight in to J but it would be prohibitively expensive.
Only upgrade option is JMB miles if you are booked in class K and above.
I see. Thanks.
I thought I have seen it (cash upgrade option for NRT-SIN from Y+ to J) offered at the transfer desk, but not certain.